NDIR Methane Measuring & Gas Detection

NDIR methane measuring and gas detection systems identify and quantify CH4 concentration through infrared light absorption at the 3.3 µm molecular absorption band. They project IR light through a sample gas volume. The photodetector measures intensity reduction at this wavelength. The system converts this attenuation to a ppm or %LEL reading. Furthermore, this principle avoids the catalytic poisoning that disables pellistor sensors on exposure to silicone, halogen, and sulfur compounds in gas processing environments.

Dual-wavelength reference channels add a second detector at a non-absorbing wavelength. The ratio between sample and reference signals cancels source aging, temperature drift, and optical fouling. As a result, NDIR methane systems maintain calibration accuracy across 5 to 10 year service intervals. This reduces recalibration visits and replacement costs significantly across large industrial detector networks.

Open-path NDIR detectors project IR beams across 5 to 200 meters between transmitter and receiver units. They detect diffuse methane cloud releases across large open process areas. Moreover, portable NDIR methane analyzers deliver ppm-level readings for confined space entry surveys, pipeline leak pinpointing, and compliance spot-checks without fixed installation infrastructure.

These systems serve Pakistan’s SSGC and SNGPL gas networks, OGDCL and PPL processing facilities in Sindh and Balochistan, WAPDA gas turbine stations, LPG distribution operators, and fertilizer manufacturing plants in Multan and Lahore.

Tactical Supply Pakistan supplies NDIR methane measuring and gas detection systems for pipeline safety, industrial hazardous area monitoring, and gas facility leak survey procurement across Pakistan.